Question

tv unit size is the diagonal of the screen. a 15in tv has a width of 12 inches, what is the height?

Answer 1

i got 9?

Answer 2

Pythagorean Theorem:
\[a^{2}+b^{2}=c^{2}\]
You're given the hypotenuse and one of the legs (pick 1 or b, it doesn't matter which). Substitute in the values:
\[a^{2}+12^{2}=15^{2}\]
Then solve for a:
\[a^{2}+144=225\]
\[a^{2}=81\]
\[a=9\]

Answer 3

(pick a* or b), not 1or b